Lady Astronaut Bundle by Mary Robinette Kowal

This listing is for the first four books from Mary Robinette Kowal's Lady Astronaut series: The Calculating Stars, The Fated Sky, The Relentless Moon, and The Martian Contingency. #1 is a reprint, and the cover texture is different from books two through four (it's matte, whereas the others are glossy).

Kowal's Hugo and Nebula Award-winning alternate history series expands on the premise behind her award-winning novelette, The Lady Astronaut of Mars.

On a cold spring night in 1952, a meteorite falls to earth and destroys much of the eastern seaboard of the United States, including Washington D.C. The Meteor, as it is popularly known, decimates the U.S. government and paves the way for a climate cataclysm that will eventually render the earth inhospitable to humanity. This looming threat calls for a radically accelerated timeline in the Earth's efforts to colonize space, and allows a much larger share of humanity to take part in the process.

alternate history, science fiction, sci-fi